High Gain and Wide Band mm- Wave Antenna Incorporating Metasurfaces and Conical PEC Walls

This work presents a novel slotted patch antenna design featuring high gain and wide bandwidth, based on the Fabry-Perot approach. Advanced techniques are incorporated to enhance both gain and bandwidth. The proposed design utilizes a partially reflective surface (PRS), an artificial magnetic conductor (AMC), and conical PEC walls to improve gain and radiation characteristics. The conical PEC walls enhance gain and directivity by minimizing back radiation and concentrating radiated power. Additionally, it prevents side radiation leakage by reflecting it back onto the PRS. The proposed antenna achieves a maximum realized gain of 13 dB, with a wide 3-dB gain bandwidth of 27%, ranging from 28.6 GHz to 37.6 GHz. Optimized for fifth-generation (5G) high-frequency bands, the design also achieves a −10-dB bandwidth from 27 to 39 GHz.